SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Operating Instructions Manual

Page: 207 / 260

09/08
Operating Instructions ACU
205
16.5.2 Torque Controller
The torque-controlled configurations 230 and 430 often demand limitation of the
speed in the operating points without load moment. The controller increases the
speed in order to reach the reference torque until the
Frequency upper limit
767 or
the
Frequency lower limit
768 is reached. As from the limit value the drive is con-
trolled to maximum speed, which corresponds to the behavior of the speed control-
ler. Thus, the controller is limited to the
Maximum frequency
419.
Parameter Settings
No. Description Min. Max. Fact. sett.
767 Frequency upper limit -999.99 Hz 999.99 Hz 999.99 Hz
768 Frequency lower limit -999.99 Hz 999.99 Hz 999.99 Hz
16.5.2.1 Limit Value Sources
The limitation of the frequency can be done by setting fixed values and by linking to
an analog input parameter. The analog value is limited via parameters
Minimum
reference percentage
518 and
Maximum reference percentage
519, but does not
consider the
Gradient percentage ramp
477 of the reference percentage value chan-
nel.
The assignment is done for the torque controller via parameters
Frequency upper
limit source
769 and
Frequency lower limit source
770.
Operation mode 769, 770 Function
101 - Analog input MFI1A
The source is the multifunctional input 1 in an
analog
Operation mode
452.
110 - Fixed limit
The selected parameter values are taken into ac-
count to limit the speed controller.
201 - Inv. analog input MFI1A Operation mode 101, inverted.
210 - Inv. fixed limit value Operation mode 110, inverted.
Operating Instructions ACU 205 09/08